If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2/7=1/2+1/a
We move all terms to the left:
2/7-(1/2+1/a)=0
We can not solve this equation
| 9x=3=30 | | 3x^2+10x-9000=0 | | 2/7=1/3+1/a | | 5(x+4)=5 | | 3x^2-10x+9000=0 | | -10x/(+2/5)=0 | | -10/(+2x/5)=0 | | 8=1000+3x | | 8(x-1)=(6x-26) | | x*5-32=x*3-10 | | y+×=405 | | (16,5+13x)-15x=0 | | 16x-128=-4x+-152 | | 70x^2+21x-7=0 | | 4*(x+5)=36 | | 1/2x+7/5=3+1/5x | | m+87=403 | | 4x=2x= | | 8x+4x^2=240 | | 2^x-3.3^2x-8=36 | | 5x4+4=4x4+3 | | 4x/x4-1=0 | | 55852,05=600*x^2,25 | | -15x^2+42x-24=0 | | 3(x−9)(x−2)−(x−7)(x−9)=0 | | a*3+6=1 | | x+22=4+3x | | 4x+3=24+x | | 3z/7+2=3 | | (x+1)(x+1)-(5-4x)(5-4x)=0 | | a/6+8=9 | | (x+1)^2-(5-4x)^2=0 |